Article ID: 2785054 - View products that this article applies to.
Microsoft distributes Microsoft SQL Server 2012 Service Pack 1 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2012 Service Pack 1 fix release.
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Symptoms

Assume that you run a query that has the following characteristics in Microsoft SQL Server 2012:
  • The query includes a COLLATE clause that references _90 Windows collations.
  • The query includes a LIKE operator and a % wildcard. Additionally, characters follow the wildcard.
  • The input string includes a substring of the characters that follow the wildcard.

    For example, the input string in the following query contains "pL" and "p," which are substrings of "pLe":
    SELECT 1 WHERE 'pLpLe' LIKE '%pLe' COLLATE Korean_90_CS_AI
In this situation, the query may return incorrect results.

Resolution

Cumulative update information

Cumulative Update 2 for SQL Server 2012 SP1

The fix for this issue was first released in Cumulative Update 2. For more information about how to obtain this cumulative update package for SQL Server 2012 SP1, click the following article number to view the article in the Microsoft Knowledge Base:
2790947 Cumulative update package 2 for SQL Server 2012 Service Pack 1
Note Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2012 SP1 fix release. We recommend that you consider applying the most recent fix release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2772858 The SQL Server 2012 builds that were released after SQL Server 2012 Service Pack 1 was released

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

For more information about _90 Windows collations, go to the following MSDN website: 
General information about _90 Windows collations
For more information the Incremental Servicing Model for SQL Server, click the following article number to view the article in the Microsoft Knowledge Base:
935897 An Incremental Servicing Model is available from the SQL Server team to deliver hotfixes for reported problems
For more information about the naming schema for SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:
822499 Naming schema for Microsoft SQL Server software update packages
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Properties

Article ID: 2785054 - Last Review: January 24, 2013 - Revision: 1.0
Applies to
  • Microsoft SQL Server 2012 Service Pack 1
  • Microsoft SQL Server 2012 Enterprise
  • Microsoft SQL Server 2012 Standard
  • Microsoft SQL Server 2012 Developer
  • Microsoft SQL Server 2012 Web
  • Microsoft SQL Server 2012 Express
  • SQL Server 2012 Enterprise Core
Keywords: 
kbqfe kbfix kbsurveynew kbexpertiseadvanced KB2785054

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